Interesting. The US omits windsurfing and the UK omits multihulls and keelboats (but leave an open slot unspecified per gender). Both endorse both two person dinghies and two person high performance dinghies.

I would have thought there was a stronger case for a single two person dinghy class per gender in order to allow both windsurfing and keelboats.

Also interesting is the Tornado Association's claim that 1/4 of all racing worldwide is in multihulls. Is that credible?

And it does appear that the RYAs submission is already locked down. I seem to recall that the strategy of multihull sailors in the US was to petition either ISAF or the IOC directly to have the US submission thrown out. Someone will have a better memory than me about this.